Remove the center console's panel to see where your camera cables are going into. On ours, there is a separate camera control box with all of the cameras plugging into it. If you have one like that you could have the left and right cables reversed.
Before ripping the dash apart I would suggest doing this first.
Check all your turn signal bulb and marker lights are working properly.
A burnt out bulb may cause this issue.
Also turn off the dash camera panel and turn it back on will also reset itself.
If these checks don't work I would look for a loose plug in the dash that is marked left camera.
Good luck
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